Northampton County is a true toss-up. About 50% of voters here vote Democratic and 50% Republican.
About 78% of adults in Northampton County typically vote, above the U.S. average of about 62%. Among adults in Northampton County, ~39% vote Democratic, ~39% Republican, and ~22% don't vote. The map below shows estimated turnout by block group.
How Northampton County compares
Among counties within 50 miles, Northampton County sits roughly in the middle of the political spectrum, with 11 neighbors leaning further in the place's direction and 5 leaning the other way.
Politically, Northampton County sits close to the rest of Pennsylvania.
Politics vary noticeably by city within Northampton County. The southwest side runs the most Democratic (D+23) and the northwest side runs the most Republican (R+34), a spread of about 57 points.
Why Northampton County leans the way it does
Density, race composition, education, and family structure all sit close to their national averages in Northampton County. The lean here lands roughly where demographic data alone would predict.
Population density and Democratic lean
Places with high population density tend to lean Democratic; Northampton County, PA sits in the top tenth nationally on this measure.
Why turnout in Northampton County looks the way it does
Areas with strong routine healthcare access turn out at higher rates. Northampton County is in the top quarter nationally for routine-care measures such as insurance coverage, preventive screenings, and dental visits. The dental-visit rate here is about 65%, about 5 points above the U.S. average of 60%. Learn more about the findings and methodology on the political spectrum map.
Nearby Counties
- Lehigh County, PA D+6
- Warren County, NJ R+16
- Monroe County, PA Even
- Carbon County, PA R+35
- Hunterdon County, NJ R+6
- Bucks County, PA Even
- Montgomery County, PA D+21
- Berks County, PA R+8
- Somerset County, NJ D+15
- Sussex County, NJ R+23
Counties with Similar Populations
- Lorain County, OH R+5
- Rockingham County, NH D+6
- Albany County, NY D+30
- Lubbock County, TX R+23
- McHenry County, IL R+5
- Escambia County, FL R+13
- Fayette County, KY D+24
- Lancaster County, NE D+7
- Cumberland County, ME D+29
- Gloucester County, NJ R+2
Sources and methodology
Precinct-level voting records used to fit the model come from Pennsylvania Department of State, Bureau of Elections, distributed by the Voting and Election Science Team. Demographic inputs come from the U.S. Census Bureau (ACS 5-year estimates and the 2020 Decennial Census). Health and environmental inputs come from the CDC (PLACES and the Environmental Justice Index). Land cover comes from the USGS and EPA. Election-day and lead-up weather come from PRISM 4km daily grids and the NOAA Global Historical Climatology Network. Mail-voting and election-administration patterns come from the MIT Election Lab's Survey of the Performance of American Elections. Block-group crime detail comes from CrimeGrade. Internet data and modeling support provided by ISPreports.org.
Modeling and analysis by the BestNeighborhood data science team. Full methodology and findings: political spectrum map.
Methodology reviewed by the BestNeighborhood data team. Last updated May 2026.